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1/4-20 Machine Screws (ASME B18. 6.3)

Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.

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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1/41/4-20 x 1/4 phil pan machine screw s/s b18.6.3200
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 p-flat m/s stl znc b18.6.32970
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 p-flat m/s stl znc b18.6.3900
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 p-pan m/s type-f hrd stl znc b18.6.31944
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 p-pan m/s s/s b18.6.35400
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 p-pan m/s s/s b18.6.3197
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 p-pan m/s stl znc b18.6.32225
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 p-pan m/s stl znc b18.6.3500
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 p-truss m/s s/s b18.6.35200
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 p-truss m/s s/s b18.6.3200
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AbabaCAMachine ScrewSteelBlack Oxide1/4-20 x 3/81/4-20 x 3/8 p-truss m/s stl blk ox wax b18.6.32000
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 3/81/4-20 x 3/8 s-pan m/s type-f hrd stl znc b18.6.3299
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1/21/4-20 x 1/2 p-flat 100 deg m/s s/s b18.6.31000
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1/21/4-20 x 1/2 p-flat 100 deg m/s stl znc b18.6.32100
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1/21/4-20 x 1/2 p-flat m/s s/s b18.6.37669
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1/21/4-20 x 1/2 p-flat m/s s/s b18.6.3200
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1/21/4-20 x 1/2 p-flat m/s patch per print s/s b18.6.35040
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1/21/4-20 x 1/2 p-flat m/s stl znc b18.6.31800
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1/21/4-20 x 1/2 p-flat m/s stl znc b18.6.3700
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AbabaCAMachine ScrewBrassPlain1/4-20 x 1/21/4-20 x 1/2 p-pan m/s brass b18.6.3475
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SIIINMachine ScrewSteelPlain1/4-20 x 11/4-20x1 combo-pan machine screw) b18.6.375
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B & K FASTPAMachine ScrewBrassPlain1/4-20 x 11/4-20 x 1 slotted flat machine screws brass b18.6.38
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SIIINMachine ScrewSteelPlain1/4-20 x 11/4-20 x 1 z flat head machine screw b18.6.35000
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-flat 100 deg m/s s/s b18.6.3832
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AbabaCAMachine ScrewBrassPlain1/4-20 x 11/4-20 x 1 p-flat m/s brass b18.6.3100
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-flat m/s s/s b18.6.35961
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-flat m/s s/s b18.6.3400
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-flat m/s stl znc b18.6.34782
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-flat m/s stl znc b18.6.3483
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-oval m/s s/s b18.6.31475
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-oval m/s s/s b18.6.3100
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AbabaCAMachine ScrewBrassPlain1/4-20 x 11/4-20 x 1 p-pan m/s brass b18.6.3365
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-pan m/s s/s b18.6.33090
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-pan m/s s/s b18.6.3300
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-pan m/s stl znc b18.6.35537
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-pan m/s stl znc b18.6.3200
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-truss m/s s/s b18.6.39609
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20 x 1 p-truss m/s s/s b18.6.3200
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide1/4-20 x 11/4-20 x 1 p-truss m/s s/s blk ox b18.6.31600
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-truss m/s stl znc b18.6.31773
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 p-truss m/s stl znc b18.6.3400
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AbabaCAMachine Screw400 Stainless (405, 410,416,420,430 etc.)Plain1/4-20 x 11/4-20 x 1 s-rnd m/s type-f 400 s/s b18.6.3207
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 11/4-20 x 1 s-hwh m/s t-23 hrd stl znc b18.6.32
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SIIINMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20x1-1/4 phillips flat head machine screw zinc b18.6.360
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-flat m/s s/s b18.6.3931
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-flat m/s s/s b18.6.3400
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-flat m/s stl znc b18.6.31100
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-flat m/s stl znc b18.6.3300
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-pan m/s s/s b18.6.33508
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-pan m/s s/s b18.6.3350
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-pan m/s stl znc b18.6.31400
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-pan m/s stl znc b18.6.3200
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-truss m/s s/s b18.6.322877
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 p-truss m/s s/s b18.6.3200
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-truss m/s stl znc b18.6.3795
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/41/4-20 x 1 1/4 p-truss m/s stl znc b18.6.3300
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/41/4-20 x 1 1/4 s-pan m/s s/s b18.6.33788
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 3/81/4-20 x 1 3/8 phil pan machine screw s/s b18.6.3425
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AbabaCAMachine Screw400 Stainless (405, 410,416,420,430 etc.)Plain1/4-20 x 1 1/21/4-20 x 1 1/2 p-f lat m/s type-f 400 s/s b18.6.3200
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/21/4-20 x 1 1/2 p-flat m/s type-f hrd stl znc b18.6.31196
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/21/4-20 x 1 1/2 p-flat m/s s/s b18.6.32962
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 1 1/21/4-20 x 1 1/2 p-flat m/s s/s b18.6.3300
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/21/4-20 x 1 1/2 p-flat m/s stl znc b18.6.31621
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 1 1/21/4-20 x 1 1/2 p-flat m/s stl znc b18.6.3200
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SIIINMachine ScrewSteelZinc/Clear1/4-20 x 51/4-20x5 zinc pan head phillips machine screw) b18.6.3475
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 51/4-20 x 5 p-flat m/s s/s b18.6.3120
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AbabaCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 51/4-20 x 5 p-flat m/s s/s b18.6.325
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 51/4-20 x 5 p-flat m/s stl znc b18.6.344
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 51/4-20 x 5 p-flat m/s stl znc b18.6.3150
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 51/4-20 x 5 phil-pan mach screw stl znc b18.6.3190
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AbabaCAMachine ScrewSteelZinc/Clear1/4-20 x 61/4-20 x 6 s-rnd m/s stl znc b18.6.3442
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